591   if (!snes->vec_func && (snes->jacobian || snes->jacobian_pre)) {  in SNESSetUpMatrixFree_Private()
593     PetscCall(MatCreateVecs(A ? A : B, NULL, &snes->vec_func));  in SNESSetUpMatrixFree_Private()
603 …PetscCheck(snes->vec_func, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "SNESSetFunction() must be c…  in SNESSetUpMatrixFree_Private()
605     PetscCall(MatCreateSNESMFMore(snes, snes->vec_func, &J));  in SNESSetUpMatrixFree_Private()
1956     PetscCall(VecDestroy(&snes->vec_func));  in SNESSetFunction()
1957     snes->vec_func = r;  in SNESSetFunction()
1985   Vec vec_func;  in SNESSetInitialFunction()  local
1995   PetscCall(SNESGetFunction(snes, &vec_func, NULL, NULL));  in SNESSetInitialFunction()
1996   PetscCall(VecCopy(f, vec_func));  in SNESSetInitialFunction()
3367   PetscCall(SNESGetFunction(snes, &snes->vec_func, NULL, NULL));  in SNESSetUp()
3373   if (!snes->vec_func) PetscCall(DMCreateGlobalVector(dm, &snes->vec_func));  in SNESSetUp()
3486   PetscCall(VecDestroy(&snes->vec_func));  in SNESReset()
4885 …if (snes->vec_rhs) PetscCheck(snes->vec_func != snes->vec_rhs, PETSC_COMM_SELF, PETSC_ERR_ARG_IDN,…  in SNESSolve()
4886 …PetscCheck(snes->vec_func != snes->vec_sol, PETSC_COMM_SELF, PETSC_ERR_ARG_IDN, "Solution vector c…  in SNESSolve()
5159     if (!snes->vec_func) {  in SNESGetFunction()
5161         PetscCall(VecDuplicate(snes->vec_rhs, &snes->vec_func));  in SNESGetFunction()
5163         PetscCall(VecDuplicate(snes->vec_sol, &snes->vec_func));  in SNESGetFunction()
5165         PetscCall(DMCreateGlobalVector(snes->dm, &snes->vec_func));  in SNESGetFunction()
5168     *r = snes->vec_func;  in SNESGetFunction()
5575     PetscCall(VecNorm(snes->vec_func, NORM_2, &kctx->norm_first));  in KSPPreSolve_SNESEW()